1. Introduction
  1.1 Background and significance
  1.2 Objectives of the study
2. Biochemical alterations in cancer cells
  2.1 Metabolic reprogramming in cancer
  2.2 Dysregulated signaling pathways
  2.3 Altered gene expression and epigenetic modifications
3. Techniques for studying cancer cell biochemistry
  3.1 Cell culture and cell line models
  3.2 Metabolomics approaches
  3.3 Proteomics and phosphoproteomics
  3.4 Transcriptomics and epigenomics
4. Case studies: Biochemical alterations in specific cancer types
  4.1 Breast cancer
  4.2 Lung cancer
  4.3 Colorectal cancer
  4.4 Prostate cancer
5. Therapeutic implications and future directions
  5.1 Targeting metabolic vulnerabilities in cancer cells
  5.2 Exploiting dysregulated signaling pathways
  5.3 Epigenetic-based therapies
  5.4 Personalized medicine approaches